Abstract: In this paper, an integrated diagnostic system built and used at Shenguang II and Xingguang II laser facility for inertial confinement fusion experiment has been reviewed. The progress of diagnostic technique for Xray optical band, fusion products has been emphasized. The many diagnostic instruments, such as three chromatic spectrometer (TCS) that consists of Xray streaked camera and was applied in many experiments, have been developed. The Xray's temporalspatial behaviors of three kinds of wavelength could be investigated in the meantime using TCS. The application on investigation of hohlraum target physics, implosion dynamic and opacity have been introduced.